It combines commonly available parts, a vehicle that isn't huge and can still maneuver in the city, with 4x4 capability, doesn't attract that much attention, and oh yes, its armored for when things get rough and people with the pocket realize the security an armored vehicle provides.
Getting a nice truck and rebuilding it with armor is also a possibility, but would demand some steel working and welding skills, and the results might not be as ... "discrete".
Very nice car.
For the Jeep J8 armoured version, there is also a civil version, named Discrete Armoured Vehicle. This version of the Jeep J8 is equipped with an armour kit, protected to STANAG 4569 Level 1 to provide a protected vehicle for 4/5 man crew with armoured rear crew area, used for civil needs. The vehicle is fitted with the Payload Enhancement Kit which improves the payload, braking and handling of this vehicle.